Recently Active Questions

What to do and what not to do in the last month before IIT-JEE http://www.youtube.com/watch?v=Z5-AfiJxjOc&context=C4acfebbADvjVQa1PpcFMQX-FKsRHXxJDA7RTt_k4sN1NL6Iapsuo= ...

if perimeter of a quadrilateral is 4x then find the maximum value of the area of 3 triangles out of which 2 are identical such that the sum of the area of the triangle is not exceeding the area of the quardilateral .......... ...

solve for least values x and y... 2(sin x + sin y) - 2 cos(x-y)=3. ...

What was the cutoff for VITEEE in 2011. Please tell me rank v/s marks analysis if you have proper Information. I got this http://www.myengg.com/engg/info/2138/viteee-2010-cutoffs-rank-predictor/ Are these right cutoffs. And a ...

Happy Bengali New Year to all my Bengali Friends - Shuvo Noboborsho [1] *Image* ...

If A is an Invertible Matrix, Show that det(AT A)>0 ...

The number of quadratic equations, which are unchanged by squaring their roots is ? ...

A mixture of H2O(v), CO2 and N2 was trapped in a glass apparatus with a volume of 0.731 ml. The pressure of total mixture was 1.74 mm of Hg at 23°C. The sample was transferred to a bulb in contact with dry ice(-75°C) so tha ...

A graph is plotted between PVm along y axis and P along x axis,Vm is molar volume of real gas.Find intercept along Y axis. Please explain how you have solved it ! Answer is Pb+RT ...

can someone please explain the resonating structures for SO3... please explain the movement of electrons as well... thanks in advance...!! ...

When a mixture of NaBr and NaCl is repeatedly digested with H2SO4, all the halogens are expelled and Na2SO4 is formed quantitatively. With a particular mixture, it was found that the weight of NaBr-NaCl mixture taken. calcula ...

*Image* http://postimage.org/image/she97yup7/ ...

Find the sum of n terms: 1+2(1-a) +3(1-a)(1-2a)..........k(1-a)(1-2a)...{1-(k-1)a} ...

In paper 1, chemistry section, there was one question on aromaticity. We were asked to select UNSTABLE molecules from the ones given at room temperature (Multiple correct). Why can't option A) (1,3-cyclohexadiene) also be the ...

if the sides of the triangle is determined by throwing a triplet of dice then the number of different triangles with all the distinct sides is?? ...

202 x 20002 x 200000002 x 20000...(13 zeroes)...2x 2... (31 zeroes)...2. Find the sum of the digits of the product thus formed. ...

The number of quadratic equations, which are unchanged by squaring their roots is ? ...

*Image* ...

\hspace{-16}$If $\bf{a_{1}+a_{2}.2!+a_{3}.3!+......+a_{n}.n!=695}$. Then $\bf{a_{4}=}$\\\\ If $\bf{0\leq a_{k}\leq k}$ and $\bf{n!=n.(n-1).(n-2)........3.2.1}$ ...

∫[ ( x2 + 1 ) / ( x4 + 1) ] dx ...

What to do and what not to do in the last month before IIT-JEE http://www.youtube.com/watch?v=Z5-AfiJxjOc&context=C4acfebbADvjVQa1PpcFMQX-FKsRHXxJDA7RTt_k4sN1NL6Iapsuo= ...

\hspace{-16}$Find Min. value of $\bf{\mid z^2-az+a\mid}$\\\\ Where $\bf{a\in\mathbb{R}}$ and $\bf{\mid z \mid \leq 1}$ and $\bf{z\in \mathbb{C}}$ ...

\hspace{-16}$If $\bf{f(1)=1}$ and $\bf{f(x+5) > f(x) +5 f(x+1) < f(x) + 1}$\\\\ and $\bf{g(x)=f(x)-x+1}$.Then $\bf{g(2012)}$ is ...

The 4th power of the common difference of an A.P. with integer entries is added to the product of any 4 consecutive terms of it. Prove that the resulting sum is the square of an integer. ...

Shan parks his car among 6 cars already standing in a row, his car not being parked at an end. On return he finds that exactly 4 of the 7 cars are still there. What is the probability that both the cars parked on two sides of ...

The state of hybridisation of central atom in POCl3 is : 4+ 1/2 (5-5)=4→sp3 ....can anyone explain that formula in bold letters.... ...

*Image* The figure shows mass m moves with velocity u. Ring is restricted to move on smooth fixed horizontal rod. Velocity of the ring at that moment? I thought the answer to be u/2 but the correct answer is 2u. This can happ ...

no. of ways to make a 5 letter word out of the word SUCCESS such that no 2 C and no 2 S are together is?? ...

if the curves ax2+4xy+2y2+x+y+5=0 and ax2+6xy+5y2+2x+3y+8=0 intersect at 4 concyclic points then the value of |a| is ??? ...

Find the equation and length of common tangents to x^2/a^2 - y^2/b^2=1 and y^2/a^2 -x^2/b^2=1 . Please explain how you have solved it Answers: x±y=±√(a^2-b^2) And √2(a^2+b^2)/√(a^2-b^2) ...